DEBIAN-CVE-2016-4020

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2016-4020
Published: 25 May 2016, 15:59
Last modified:28 Apr 2026, 20:15

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 May 2016, 15:59
Published
Vulnerability first disclosed
28 Apr 2026, 20:15
Last Modified
Vulnerability information updated

Description

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected Systems

  • debian•qemu

    < 1:2.6+dfsg-2 | < 1:2.6+dfsg-2 | < 1:2.6+dfsg-2 | < 1:2.6+dfsg-2

References (1)